FAC §62191: (a) Except as otherwise provided in Section 62193 or 62194, the purchase of any market milk in excess of 1,000 gallons monthly from any producer is an unlawful trade practice unless a written contract

(a) Except as otherwise provided in Section 62193 or 62194, the purchase of any market milk in excess of 1,000 gallons monthly from any producer is an unlawful trade practice unless a written contract, which complies with all of the requirements which are prescribed by this section, has been entered into with the producer. (b) The contract shall include all of the following: (1) The amount of market milk which is to be purchased for any period. (2) The minimum quantity of the market milk which is to be paid for as class 1, if any is to be purchased for this purpose. The quantity shall be stated in pounds of market milk, pounds of market milk fat, or gallons of market milk, unless the price which is to be paid for the class 1 market milk is established separately for the market milk fat and market skim milk, in which case the quantity may, in the alternative, be stated in both pounds of market milk fat and pounds of market skim milk separately. The minimum quantity of market milk to be paid for as class 1 shall not be less than 70 percent of the total quantity provided in the contract to be purchased at a milk products plant, and not less than 60 percent of the total quantity of market milk fat, or the total quantity of market skim milk components, but not necessarily both, provided in the contract to be purchased at a country plant, as defined by the director in stabilization and marketing plans. (3) The price to be paid for all market milk received. (4) The date and method of payment for the market milk. Payment shall be made for the amount of the market milk delivered during the first 15 days of any calendar month not later than the first day of the next following month and for the amount delivered during the remainder of the month not later than the 15th day of the next following month unless the milk is subject to a pooling plan as authorized in Chapter 3 (commencing with Section 62700) and the pooling plan provides for different dates and methods of payment, in which case the date and method of payment for the milk shall be as provided for in the pooling plan. (5) The charges for transportation if hauled by the handler. (6) A provision that market milk received within the total quantity provided by the contract to be purchased for any period shall not be paid for at less than the minimum price for market milk used for class 2. (c) The contract may contain other provisions that are not in conflict with this chapter. A signed copy of the contract shall be filed by the producer with the director within five days from the date of its execution. (d) Paragraphs (2) and (6) of subdivision (b) shall not be applicable if an equalization pool, as provided pursuant to Chapter 3 (commencing with Section 62700), is in effect for the area in which the purchase of the market milk occurs.